1388290820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{9916363}}^1$

素因数の和:9916379

約数の個数: 24

約数和(自身を含む): 3331898304

約数和(自身を除く): 1943607484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 9916363, 19832726, 39665452, 49581815, 69414541, 99163630, 138829082, 198327260, 277658164, 347072705, 694145410, 1388290820]

約数ペア:

[(1, 1388290820), (2, 694145410), (4, 347072705), (5, 277658164), (7, 198327260), (10, 138829082), (14, 99163630), (20, 69414541), (28, 49581815), (35, 39665452), (70, 19832726), (140, 9916363)]